Improvement in plows



J. CASE.

I Wheel-Plow.

Patented Dec, 8, 1857.

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Llll, PHGTO-LITHD. CO, N-Y. (USRDRNE'S PROCESS.

UNITED STATES PATENT OFFICE.

JARVIS CASE, OF SPRINGFIELD, ILLINOIS.

IMPROVEMENT IN PLOWS.

Specification forming part of Letters Patent No. 18,803, dated December8, 1857.

To all whom it may concern:

Be it known that I, JARVIS CASE, of Springfield, in the county ofSangamon and State of Illinois, have invented certain new and usefulImprovements in Flows; and I do hereby declare the following to be afull, clear, and exact description of the construction and operation ofthe same, reference being had to the accompanying drawings, making apart of this specification, in which- Figure 1 represents aperspectiveView. Fig. 2 represents a side elevation, partially in section, and byred lines the position into which the several parts can be thrown by theweight of the driver mounted on the plow; and Fig. 3 represents atransverse section through the supporting-wheels, being centrally andvertically taken.

Similar letters of reference,where they occur in the several figures,denote like parts of the plow in each of them.

The nature of my invention relates to the so jointing of the beam andtongueof a plow and extending a lever (which in this case is the seatalso) from one to the other as that the driver who rides upon the plowmay throw up the plow or plows out of the ground to turn around at theends of the furrow, and so supporting the beam on the wheelsasthatthelatter in rising over any obstruction or dropping into anydepression may not tend so much to throw the plow into or out of theground.

To enable others skilled in the art to make and use myinvention, I willproceed to describe the same with reference to the drawings.

A represents the beam, stock, or frame of the plow, to the rear portionsof which are attached the two plows B B. More or less than two may beused, In rear of the extreme front end of the beam a supporting piece,a, passes through it at about its center, the lower end of saidsupporting-piece a being slightly forked or curved out,as shown in Fig.3, so as to straddle or rest upon the axle c of the supportingwheels 0G.

On the axle c are secured two collars, e 6, between which the point orlower end of the piece a, which is made wedge-shaped at that end for thepurpose, rests. The upper end of the piece a is bent over and forked, asseen at i, Fig.1, and these forks straddle a screw-rod,

f, between fast collars, or in a recess in said rod, so that by turningthe winch .g the front of the beam A may be raised or lowered on theaxle c, which would also raise or lower the points of the plows B B toregulate the depth at which they are to run.

On the sides of the beam A are arranged guide-pieces b b, which straddlethe axle c and tend to keep said axle at right angles to the plow-beam,whilethe plow-beam maybe raised or lowered thereon at pleasure.

The front end of the beam is mortised out so as to receive the rear endof the-tongue D, said tongue being confined therein by the screw-bolt orrodd passing through said beam and tongue, but so that the tongue mayplay vertically,but be rigid, or nearly so, laterally. At the extremerear end of the tongue,behind the rod d, is arranged a lever, E, whichcurves backward,and for convenience may have upon its extreme rear end adrivers seat, F, upon which the driver may shift his position to throwthe plow or plows out of the ground when it is to be turned at the endof the furrow.

The end of the tongue is fastened to the horses necks or breasts in thecommon wellknown way, and when the lever E is in the position shown byblack lines in Fig. 2 (which position is had by the driver movinghimself forward on his seat) the plows and beam will be in the positionshownin said figureby black lines. Now let the driver slip himselfbackon his seat until his weightdepresses the seat to the point shown bythe red lines, and the several other parts of the plow will assume thepositions shown respectively in red lines, the plows themselves beingraised up out of the ground sufficiently to turn the plow around.

To prevent the fore end of the beam from going too low, an adjustablepin, h, may be placed through one of the holes 1 2 in said lever, whichwill stop against the ends of the beam A.

G are double-trees arranged on the dragbar H, which is pivoted to thetongue by the king-bolt a, the plow being shown as arranged for fourhorses, but may be arranged with one plow and single pair of horses.

The plows may be set to or from the land by means of keys at passingbetween the neck of 'plow.

the mold-board and the beam or stock, and by having a set-screw, 0, andslot 1", as seen in Fig. 1. A screw-bolt, 8, may also pass through theneck ofthe mold-board and beam for fur.- ther security.

Of the wheels 0 O,one of them should be loose upon the axle tofacilitate the turning around of the plow. They have cutting-edges u uat their outer perimeters for scoringthe sod, or cutting stalks, weeds,&c., and these cutting-edges run immediately in front of the points ofthe plow, so that the furrows shall be'turned from the scores made bythese outters. the depth at which the cutters shall penetrate theground. Y

By supporting the beam A on the center of the axle 0 the wheels may riseand fall in passing over the ground without affecting materially thebeam or the plows connected to it,

any motion they havefrom this cause being Vertical, and not rocking orrolling sidewise, which would throw the points into and out of groundand endanger the breaking of the The main tendency of the passage of Thetreads v t) on the wheels regulateas new, and desire to secure byLetters Patcut, is

"1. Hinging the tongue to the beam of a plow and extending a lever orlever-seat from oneto the other, so that the driver mounted on the plowmay by said lever throw the plow or plows out of the ground, as hereinset forth.

2. Supporting the front of the beam on the center of an axle, 0,supported in wheels 0 0,

so that said beam may be raised or lowered on said axle, but notaffected by the passing of said wheels over the rough ground, as hereipset forth and explained.

JARVIS CASE.

Wiinesses:

' A. B. S'roUeHToN,

'lnos. H. UPPERMANS.

